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Chris Tate
7329f07d36
- scr_intl.c resolves the default locale as V8 does: ICU's POSIX locale (LC_ALL=C, C.UTF-8, POSIX) becomes en-US, so numbers keep their grouping separators, and other defaults round-trip through their BCP 47 tag. The number formatter, the date pattern generator, the date formatter and the default word segmenter use that locale. - The date formatter moves the Gregorian calendar's Julian cutover to the start of ECMAScript time, so dates before October 1582 print their proleptic Gregorian fields, as in Node. - icu.numFormatDefault, icu.dateLocaleString and icu.dateLocaleTimeString are in the may-throw set: a missing ICU data file throws an Error into the surrounding catch. - `x.toLocaleString(undefined)` reads the receiver before the argument runs. - The linux-x64-gnu runtime pack ships the ICU headers scr_intl.c includes beside its ICU archive (manifest `headers`, verified like the other artifacts). The native compiler's sanitized build compiles scr_intl.c against them and refuses with SC3003 when they are missing or changed. The C-source path (sanitized builds) links the pack's ICU archive and uses those headers, instead of building ICU with Zig's C++ driver. - The macOS pack omits scr_intl.c, scr_intl.h declares ScrDyn, and the library-mode teachings test uses a locale argument, which still refuses with SC2020. Corpus programs pin the C and C.UTF-8 locales, pre-1582 dates and the receiver order against Node. intl-missing-data.test.ts covers the throw. sanitizer.test.ts covers the header lookup.